
Black plate (29,1)Cadillac DTS Owner Manual - 2011
When automatic lighting is on and it is bright enough
outside, the regular lamps go off, and the DRL takes
over. If the vehicle is started in a dark garage, the
automatic headlamp system comes on immediately.
Once you leave the garage, it will take approximately
one minute for the automatic headlamp system to
change to DRL if there is light outside. During that
delay, the instrument panel cluster may not be as bright
as usual. Make sure the instrument panel brightness
knob is in the full bright position. SeeInstrument Panel
Brightness on page 4‑30.
Turning on automatic lighting or the headlamps will
deactivate the DRL. If the parking lamps or the fog
lamps were turned on instead, the DRL will still
deactivate.
To idle the vehicle with the DRL off at night, turn off
automatic lighting and shift the transmission into
P (Park). Placing the vehicle in P (Park) disables the
DRL. The DRL will stay off until the vehicle is shifted
out of P (Park).
To drive the vehicle with the DRL off, turn off automatic
lighting and manually turn on the parking lamps or fog
lamps, if the vehicle has them.
The regular headlamp system should be turned on
when needed.Fog Lamps
The fog lamps button is on the exterior lamps control to
the left of the steering column.
#(Fog Lamps): Press to turn the fog lamps on or off.
A light comes on in the instrument panel cluster when
the fog lamps are in use. See Instrument Panel Cluster
on page 4‑45. The ignition must be in the ON/RUN
position for the fog lamps to work.
The fog lamps will go off when the headlamps are
changed to high-beam.
Some localities have laws that require the headlamps to
be on along with the fog lamps.
Cornering Lamps
The cornering lamps come on when the headlamps or
parking lamps are on and you signal a turn with the
multifunction lever. They provide more light for
cornering.
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Black plate (31,1)Cadillac DTS Owner Manual - 2011
Parade Dimming
This feature prohibits dimming of the digital displays
and backlighting during daylight hours when the key is
in the ignition and the headlamps are on. This feature is
fully automatic. When the light sensor reads darkness
outside and the parking lamps are active, the digital
displays can be adjusted by turning the instrument
panel brightness knob counterclockwise to dim and
clockwise to brighten lighting.
Reading Lamps
The reading lamps are located on the overhead console
on the headliner and in the rear door opening. These
lamps come on automatically when any door is opened
and it is dark outside.
For manual operation, press the button to turn them on.
Press it again to turn them off.
If the reading lamps are left on, they automatically shut
off 10 minutes after the ignition has been turned off.
Footwell Lamps
For vehicles with footwell lamps, they are located under
the instrument panel and at the rear of the front seats.
These lamps provide soft light to the front and rear floor
areas. They dim with the instrument panel cluster lights.Footwell lighting brightness can be adjusted with the
instrument panel brightness control located below the
exterior lamps control. See
Instrument Panel Brightness
on page 4‑30. The footwell lights will turn off before the
instrument panel lights are at their lowest level of
brightness.
Battery Load Management
This feature monitors the vehicle's electrical load and
determines when the battery is in a heavy discharge
condition. During times of high electrical loading, the
engine may idle at a higher revolutions per minute (rpm)
setting than normal to make sure the battery charges.
High electrical loads may occur when several of the
following are on: headlamps, high beams, fog lamps,
rear window defogger, the climate control fan at high
speeds, heated seats and engine cooling fans.
If the battery continues to discharge, even with the
engine idling at a higher rpm setting, some electrical
loads will automatically be reduced. When this occurs,
the rear window defogger may take slightly longer to
clear the glass, the heated seats may not get as warm
as they usually do and the climate control fan may
cut back to a lower speed. For more battery saving
information, see “Battery Saver Active Message” under
DIC Warnings and Messages on page 4‑65.
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Black plate (32,1)Cadillac DTS Owner Manual - 2011
Electric Power Management
The vehicle has Electric Power Management (EPM) that
estimates the battery's temperature and state of charge.
It then adjusts the voltage for best performance and
extended life of the battery.
When the battery's state of charge is low, the voltage
is raised slightly to quickly bring the charge back up.
When the state of charge is high, the voltage is lowered
slightly to prevent overcharging. If the vehicle has a
voltmeter gauge or a voltage display on the Driver
Information Center (DIC), you may see the voltage
move up or down. This is normal. If there is a problem,
an alert will be displayed.
The battery can be discharged at idle if the electrical
loads are very high. This is true for all vehicles. This is
because the generator (alternator) may not be spinning
fast enough at idle to produce all the power that is
needed for very high electrical loads.
A high electrical load occurs when several of the
following are on, such as: headlamps, high beams, fog
lamps, rear window defogger, climate control fan at high
speed, heated seats, engine cooling fans, trailer loads,
and loads plugged into accessory power outlets.EPM works to prevent excessive discharge of the
battery. It does this by balancing the generator's output
and the vehicle's electrical needs. It can increase
engine idle speed to generate more power, whenever
needed. It can temporarily reduce the power demands
of some accessories.
Normally, these actions occur in steps or levels, without
being noticeable. In rare cases at the highest levels
of corrective action, this action may be noticeable to
the driver. If so, a Driver Information Center (DIC)
message might be displayed, such as BATTERY
SAVER ACTIVE, BATTERY VOLTAGE LOW, or
LOW BATTERY. If this message is displayed, it is
recommended that the driver reduce the electrical loads
as much as possible. See
DIC Warnings and Messages
on page 4‑65.
Inadvertent Power Battery Saver
This feature protects the vehicle battery against
drainage from the interior lamps, trunk lamp, glove box
lamp, or the garage door opener. When the ignition is
turned off, the power to these features automatically
turns off after 10 minutes. Power is restored for an
additional 10 minutes if any door or trunk is opened,
or the courtesy lamp switch is turned on.
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Black plate (58,1)Cadillac DTS Owner Manual - 2011
Front Fog Lamp Light
The fog lamp light comes
on when the fog lamps
are in use.
The light goes out when the fog lamps are turned off.
See Fog Lamps
on page 4‑29for more information.
Lights On Reminder
This light comes on
whenever the parking
lamps are on.
See Exterior Lamps
on page 4‑25for more information.
Cruise Control Light
This light comes on
whenever the cruise
control is set.
The light goes out when the cruise control is turned off.
See Cruise Control
on page 4‑12andAdaptive Cruise
Controlon page 4‑14for more information.
Highbeam On Light
This light comes on when
the high-beam headlamps
are in use.
See Headlamp High/Low-Beam Changer
on page 4‑6for more information.
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Black plate (43,1)Cadillac DTS Owner Manual - 2011
To disconnect the jumper cables from both vehicles, do
the following:1. Disconnect the black negative (−) cable from the vehicle that had the dead battery.
2. Disconnect the black negative (−) cable from the vehicle with the good battery.
3. Disconnect the red positive (+) cable from the vehicle with the good battery.
4. Disconnect the red positive (+) cable from the other vehicle.
5. Return the remote positive (+) terminal cover to its original position.
Headlamp Aiming
The vehicle has a visual optical headlamp aiming
system. The aim has been preset at the factory and
should need no further adjustment.
However, if the vehicle is damaged in a crash, the
headlamp aim may be affected and adjustment may be
necessary.
If oncoming vehicles flash their high beams at you, this
may also mean the vertical aim needs to be adjusted. It is recommended that the vehicle is taken to your
dealer for service if the headlamps need to be re-aimed.
It is possible however, to re-aim the headlamps as
described.
Notice:
To make sure the headlamps are aimed
properly, read all the instructions before beginning.
Failure to follow these instructions could cause
damage to headlamp parts.
The vehicle should:
.Be placed so the headlamps are 25 ft. (7.6 m) from
a light colored wall.
.Have all four tires on a level surface which is level
all the way to the wall.
.Be placed so it is perpendicular to the wall.
.Not have any snow, ice, or mud on it.
.Be fully assembled and all other work stopped
while headlamp aiming is being performed.
.Be normally loaded with a full tank of fuel and
one person or 160 lbs (75 kg) sitting on the
driver seat.
.Have all tires properly inflated.
.Have the spare tire is in its original location in the
vehicle.
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Black plate (44,1)Cadillac DTS Owner Manual - 2011
Headlamp aiming is done with the vehicle's low-beam
headlamps. The high-beam headlamps will be correctly
aimed if the low-beam headlamps are aimed properly.
To adjust the vertical aim:1. Open the hood. See Hood Release
on page 6‑13for more information.
2. Find the center line running through the lens of the
headlamp.
3. Record the distance from the ground to the center line running through the lens of the headlamp.
4. At a wall, measure from the ground upward (A) tothe recorded distance from Step 3 and mark it.
5. Draw or tape a horizontal line (B) the width of the vehicle at the wall where it was marked in Step 4.
Notice: Do not cover a headlamp to improve beam
cut-off when aiming. Covering a headlamp may
cause excessive heat build-up which may cause
damage to the headlamp.
6. Turn on the low-beam headlamps and place a piece of cardboard or equivalent in front of the
headlamp not being aimed. This should allow only
the beam of light from the headlamp being aimed
to be seen on the flat surface.
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Black plate (46,1)Cadillac DTS Owner Manual - 2011
Bulb Replacement
It is recommended that all bulbs be replaced by your
dealer.
High Intensity Discharge (HID)
Lighting
{WARNING:
The low beam high intensity discharge lighting
system operates at a very high voltage. If you try
to service any of the system components, you
could be seriously injured. Have your dealer or a
qualified technician service them.
The vehicle may have HID headlamps. After an HID
headlamp bulb has been replaced, you may notice that
the beam is a slightly different shade than it was
originally. This is normal.
Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected for wear
or cracking. See Scheduled Maintenanceon page 7‑3for more information on wiper blade inspection.
Replacement blades come in different types and are
removed in different ways. Here is how to remove the
wiper blade:
1. Turn the engine off.
2. Lift the windshield wiper arm and blade away from the windshield.
3. Pull the clip up from the blade connecting pointand pull the blade assembly down toward the
windshield to remove it from the wiper arm.
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Black plate (106,1)Cadillac DTS Owner Manual - 2011
Fuses Usage
9Engine Control Module (ECM),
Powertrain Control Module (PCM)
10 Climate Control System, Instrument
Panel Cluster Ignition 1
11 Airbag System
12 Horn
13 Windshield Wiper
14 Fog Lamps
15 Right High-Beam Headlamp
16 Left High-Beam Headlamp
17 Left Low-Beam Headlamp
18 Right Low-Beam Headlamp
19 Windshield Washer Pump Motor
20 Left Front Cornering Lamp
21 Right Front Cornering Lamp
22 Air Pump (J-Case)
23 Antilock Brake System (ABS)
(J-Case)
Fuses Usage
24 Starter (J-Case)
25Antilock Brake System (ABS) Motor
(J-Case)
26 Cooling Fan 2 (J-Case)
27 Cooling Fan 1 (J-Case)
Relays Usage
29 Powertrain
30 Starter
31 Cooling Fan 2
32 Cooling Fan 3
33 Cooling Fan 1
34 Air Conditioning Clutch
35 Air Injection Reactor (AIR) Solenoid
36 Ignition
37 Air Pump
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